Railroad crossing



A. E. CARLSON.

RAILROAD CROSSING.

APPLICATION FILED NOV. 21. 1921.

Patented Apr. 4, 1922.

3 $HEETSSHEET 1- A. E. CARLSON.

RAILROAD CROSSING. APPLICATION FILED NOV. 21. 1921. 1,411,405. I v 1Patented Apr. 4, 1922.

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A TTORNEX.

PATENT OFFICE.

ANTHONY E. CARLSON, OF LQS ANGELES, CALIFORNIA,

RAILROAD CROSSING.

Specification of Letters Patent.

Patented Apr. 4, 1922.

Application filed November 21, 1921. Serial No. 516,803.

9. "o alt w: from it 92mg concern Be it known that I, ANrHoxY E.CARLSON, a citizen of the United States, residing at Los Angeles, in thecounty of Los Angeles and State of California, have invented certain newand useful. Improvements in a Railroad Crossing, of which the followinga speralication.

My invention relates to improvements in railroad crossings in which therails cross one another at any angle or curve, in conjunction withdouble swinging frog members; and the objects of my improvements are,first to provide acontinuous running surface for car wheels to rollover, with clearances for the flange of the said car wheel to passthrough; second, to afford facilities for the adjustment or renewal ofany worn or broken parts independently of the connecting track-railsleading to the said railroad crossing; and, third, to reduce thepounding of the wheels to a minimumas they roll from one rail to theother on the said crossing at any speed, and to prevent broken rails orfiat car wheels.

A furtl'ier object of my invention is to provide a noiseless crossingwhich may be manually, mechanically or automatically operated.

I attain these objects by the mechanism illustrated in the accompanyingdrawing, in which:

Figure 1 is a plan view of my crossing, with a link connection betweenthe companion frogs.

Figure 2 is a plan view of my crossing, with a tooth connection betweenthe companion frogs.

Figure 3 is a sectional view on line 3-3 of Figure 1.

Figure 4 is a sectional view on line 4-4 of Figure 2.

Figure 5 is a sectional view on line 55 of Figures 1 and 2.

Referring to the drawings in which like characters of referencedesignate similar parts, 1 represents a plate with rails 3 and 1 securedthereon, the faces 24 and 23 form the inner sides of the rails 3 and 4respectively, and may be set to any angle or curve in a railroadcrossing, where the same is to be used, the said rails 3 being joinedtogether at their points 25, the two rails 41 beingin turn extended in aline adjoining with the said rails 3, the faces 17 being curved on theinner ends of the said rails, and the said faces 17 swinging inwardly ona line joining the outer portion of the rails 4 to the said faces 23thereon, with the pins 7 as the center of the said curved faces, and thesaid faces 1? forming tangents between the said faces 23 and 24. Thefrogs 2 and 2 are operatively secured on the pins 7 between the saidfaces 24 and 17", the pins 7 being secured to the plate 1, and the faces17 are curved around the said pins 7 as centers to correspondoperatively with the said faces 17 The straight faces 10 form the sidesof the frogs 2 and 2 at points extending from the pins 7 to the faces17*. The companion frogs 12 and 13 are operatively connected to I thesaid frogs 2 and 2 respectively by either pins 21 or teeth to formtoggle joints therebetween. The faces 11 are formed on thecompanion-frogs 12 and 13 so as to be positioned at an angle to thefaces 23 when the said companion-frogs 12 or 13 are held in a closedposition, as shown in Figures 1 and 2, and when the said faces 11 and 23are positioned parallel to one another the companion-frogs 12 or 13 areheld in an open position, as shown in profile in Figure 1.

Again, the faceslO are formed on the frogs 2 and 2 so as to bepositioned at an angle to the faces 24 when the said frogs 2 and 2" areheld in a closed position, andwhen the said faces 10 and 2 1 are heldparallel to one another the frogs 2 and 2 are likewise held in an openposition. The companion-frog 12 is extended operatively under thecompanion-frog 13 on the plate 1, and the companion-frog 13 is in turnextended operatively over the companion-frog 12, with the groove 16positioned flush with the face 17", in the frogs 2 and 13. The sockets15 and the keys 14: are integral with the innerportions of the saidcompanion-frogs 12 and 13, and mesh together when the said frogs 2' and2 are in their open positions, as shown in profile in Figure 1. Thesprings 5 are operatively positioned in the plate 1 under the frogs 2and 2 and are held in their compressed positions by the lugs 6, the saidlugs 6 being integral with the said frogs 2 and 2 and extending into therecesses 27, the said recesses 27 being positioned in the plate 1. Thelevers 22 are operatively connected to the frogs 2 and 2 on one endthereof and are in turn connected to an operating means, not shown, onthe opposite end thereof.

In the operation of my railroad crossing the frogs 2 2 13 and 1.2 areheld in their closed positions by the springs 5, thus holding the faces10 and 1.1 to the faces 24; and 23 respectively at an angle to oneanother, and as a car wheel rolls over the rails 3 from either directiontowards their points 25 towards the'rails 4, the flange on the said carwheel wedges between the faces 24 and 10, and spreads either one of thefrogs 2 or 2 into an open position, dependin upon the direction fromwhich the said wieel is rolling. Thus by spreading the said faces 10 onthefrogs 2 and 2-". from the fares "21 on the rails 3, an unbrokenrolling surface is provided over the rail 3, the frog 2 and the rail l,in one direction, and the rail 3, the frog 2" and the rail 4 in thecrossing direction. \Vhen the said car wheel is rolling from theopposite direction to those hereinbefore described, beginning from therails t, thence over the frogs 2 or 2, to the rails 3 the flange of thecar wheel first-rolls between the faces 23 and 11, and spreads eitherthe companion frogs 13 or 12 into open positions, and thus an nlibrokenrolling surface is provided overthe rail 4, the frog 2 and the rail 3,in one direction, and overthe rail 4, the frog 2" and the rail 3 in thecrossing direction. i i

The groove 16 provides a passage for the flange of the said car wheeltopass through when rolling over the frog 2.

As a car wheel will only roll from one of the crossing directions overthe frogs 2 and 12, or 2 and 13, respectively, it will be noted thatwhen the companionfro 13 is thrown open as hereinbefore de 5611 edandshown in profile in Figure 1,

the con'ipanion-frog 12 is locked in a closed position by the key 14; bymeshing into the socket- 15, and when the companion-frog 12 is in turnthrown open the companionfrog 1 likewise locked in a closed position bythe key 14 by meshing into the socket 115. The levers 2 2 throwthe frogs.2, 2 l3 and 12 to their open or closed positions, through themechanical or manual operating means, not shown.

Having thus described my invention, what I rlaim is:

1. In a railroad crossing of the class described, a plate support, twojoined rails pointed together, two adjoining rails disposed inulinen'zent with the said joined rails, mounted. on the said plate, apair of frogs operathfely positioned between the said joined rails andthe adjoining rails, respectively, and companion frogs operativelypositioned in connection with the said frogs, a locking means integralwith the said frogs and companion frogs, as set forth.

2. In a'railroad crossing of the class desrribed, a plate support, twojoined rails pointed together, two adjoining rails disposed inalineinent with the said joined rails, mounted on the said plate, a pairof frogs operatively positioned between the said joined rails andthe'adjoining rails, respectively, and companion frogs operativelypositioned in connection with the said frogs, a locking means integralwith the said frogs and companion frogs, an operating means inconnection with the said frogs and companion frogs, as set forth.

In testimonywhereof I affix my signature ANTHONY E. CARLSON

